YOU SAID:

I have a massive erection since the day I saw your legs

INTO JAPANESE

あなたの足を見た日から私はものすごく勃起している

BACK INTO ENGLISH

I've been extremely aroused since I saw your feet.

INTO JAPANESE

あなたの足を見て以来、私は非常に興奮しています。

BACK INTO ENGLISH

I have been very excited ever since I saw your feet.

INTO JAPANESE

あなたの足を見た時からずっと興奮しています。

BACK INTO ENGLISH

I've been excited ever since I saw your feet.

INTO JAPANESE

あなたの足を見た時からずっと興奮してたよ。

BACK INTO ENGLISH

I've been excited ever since I saw your feet.